package com.eldon.sistema.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import com.eldon.sistema.ControleVendas.HibernateUtil;

public class ConexaoHibernateFilter implements Filter {
	
	private SessionFactory sf;
	

	@Override
	public void destroy() {
		
	}

	@Override
	public void doFilter(ServletRequest servletFilter, ServletResponse servletResponse, FilterChain chain) throws IOException, ServletException {
		
		try {
			this.sf.getCurrentSession().beginTransaction();
			chain.doFilter(servletFilter, servletResponse);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
		} catch (Throwable ex) {
			
			try {
				if(this.sf.getCurrentSession().getTransaction().isActive())				
					this.sf.getCurrentSession().getTransaction().rollback();					
				
			} catch (Throwable t) {
				t.printStackTrace();
			}
			
			throw new ServletException();			
		}	
				
	}

	@Override
	public void init(FilterConfig conf) throws ServletException {
		
		this.sf = HibernateUtil.getSession();
		
		
	}

}
